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</div><hr /><div id="function.bzdecompress" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">bzdecompress</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.0.4, PHP 5)</p><p class="refpurpose"><span class="refname">bzdecompress</span> &mdash; <span class="dc-title">解压经 bzip2 编码过的数据</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.bzdecompress-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>bzdecompress</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$source</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$small</code><span class="initializer"> = 0</span></span>
  ] )</div>

  <p class="para rdfs-comment">
   <span class="function"><strong>bzdecompress()</strong></span> 解压了包含 bzip2 压缩数据的指定字符串。
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.bzdecompress-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">source</code></em></dt>

     <dd>

      <p class="para">
       要解压的字符串。
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">small</code></em></dt>

     <dd>

      <p class="para">
       如果为 <strong><code>TRUE</code></strong>，将会使用一种内存开销更小的替代算法（最大内存需求降低至大约 2300K）但速度会降低约一半。
      </p>
      <p class="para">
       寻找该功能的更多信息可参见 <a href="http://www.bzip.org/" class="link external">&raquo;&nbsp;bzip2 文档</a>。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.bzdecompress-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   解压后的字符串，如果发生了一个错误则返回一个错误码。
  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-function.bzdecompress-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-620">
    <p><strong>Example #1 解压一个字符串</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$start_str&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"This&nbsp;is&nbsp;not&nbsp;an&nbsp;honest&nbsp;face?"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$bzstr&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">bzcompress</span><span style="color: #007700">(</span><span style="color: #0000BB">$start_str</span><span style="color: #007700">);<br /><br />echo&nbsp;</span><span style="color: #DD0000">"Compressed&nbsp;String:&nbsp;"</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #0000BB">$bzstr</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">"\n&lt;br&nbsp;/&gt;\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$str&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">bzdecompress</span><span style="color: #007700">(</span><span style="color: #0000BB">$bzstr</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #DD0000">"Decompressed&nbsp;String:&nbsp;"</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #0000BB">$str</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">"\n&lt;br&nbsp;/&gt;\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-function.bzdecompress-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.bzcompress.html" class="function" rel="rdfs-seeAlso">bzcompress()</a> - 把一个字符串压缩成 bzip2 编码数据</span></li>
   </ul>
  </p>
 </div>

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